Police in South Florida believe a woman鈥檚 death may have been recorded by an Amazon smart device in her home.

Authorities think they may be able to use the popular home assistant to crack the case after Silvia Galva was impaled by a spear during an incident involving her partner, Adam Reechard Crespo.

According to the local media outlets, Hallandale Beach officials believe a couple鈥檚 Amazon Echo smart speakers may have recorded the deadly incident.

Following a search warrant, Amazon gave officials multiple recordings from the night in question, but neither the company, police, nor the State Attorney's Office would give more detail.

Crespo told police Galva was inadvertently killed in the couple鈥檚 condo during an argument. He said he鈥檇 tried to pull Galva off the bed when she grabbed onto a spear, WFOR reported.

The police report said Crespo heard a snap and discovered the blade of the spear had gone through her chest. He allegedly pulled out the spear hoping the injury wasn鈥檛 that bad, the report added. She died shortly after.

Crespo has been charged with first degree murder. He plead not guilty and is out on a US$65,000 bond.

"We want that evidence in because it will show our client was sleeping that night,鈥 Crespo鈥檚 attorney Christopher O'Toole told WFOR.

O鈥橳oole also said he doesn鈥檛 expect the recordings to reveal much, while also criticizing the technology giant鈥檚 privacy record.

"Unless you say one of the key words, the device shouldn鈥檛 capture any audio -- unless Amazon is secretly capturing everybody's audio but we don't know that obviously,鈥 he said.

Amazon said its devices don鈥檛 record conversations or save audio unless it hears a 鈥渨ake word,鈥 which turns on the device.